Spraying attachment for fire hose



April 20, 1943.

SPRAYINQ ATTACHMENTl FOR FIRE HOSE Filed Jan. 25, 1942 F. c. STIEFEL 2,316,913 l Patented Apr. 20, 1943 UNITED STATES PATENT OFFICE SPRAYING ATTACHMENT FR. FIRE HOSE Frank C. Stiefel, Narberth, Pa.

Application January 23, 1942, Serial No. 427,847

2 Claims.

The principal object of the present invention is to provide a simple, comparatively inexpensive, and eicient fitting readily attachable to and r?- movable from a nozzle of a fire hose, without requiring any alteration therein, such as is quite generally installed in manufacturing plants, factorles and buildings to adapt the nozzle for eX tinguishing certain fire hazards requiring a fine spray for their extinguishment and also for extinguishing certain other re hazards requiring a jet or the like for their extinguishment.

Other objects of the invention will appear from the following description at the end of which the invention will be claimed.

Generally stated the invention consists in a tapering sleeve adapted to be slidably mounted on the taper surface of a re nozzle and free for endwise movement thereon and over the discharge end thereof and held at rest in a position toward the other end of the nozzle by frictionally binding thereon, a headed screw adapted to aX- ially enter the bore of the discharge end of the nozzle and provide a fine spray and to be Withdrawn therefrom to provide a jet and a bridge attached to the end of the sleeve and to the head of the screw and providing annular space between the periphery of the head and the rim of the nozzle, the sleeve being of such length that when it binds on the nozzle the screw projects into the discharge end of the nozzle and the bridge and head are clear thereof, providing a fine spray.

The invention also consists in the improvements to be presently described and finally claimed.

In the following description reference will be made to the accompanying drawing forming part hereof and in which,

Figure 1 is a perspective view of an attachment embodying features of the invention.

Figure 2 is an elevational View showing the attachment in application to a iire hoze nozzle.

Figure 3 is a sectional elevation drawn to an enlarged scale of the left hand end of the device shown in Figure 2.

Figure 4 is an end view of the device shown in Figure 3; and

Figure 5 is a transverse sectional View taken on the line 5-5 of Figure 2.

Referring to the drawing, l indicates a standard nozzle such as is usually attached to the end of a hose not shown and forms part of re apparatus provided in many factories, plants and buildings and usually mounted on a reel or wall rack so that it is convenient for service when required. The exterior surface of the nozzle tapers toward the discharge end and is provided with a bead 2 and shank 3. l is a tapering sleeve adapted for application to and removable from the nozzle l over the discharge end thereof. The internal diameter of the sleeve 4 is appropriate for that purpose and also such that the sleeve when mounted on the nozzle is freely slidable thereon except that when moved away from the discharge end of the nozzle it binds on the exterior surface thereof and thus the movement of the sleeve in that direction is limited. 5 is a bridge shown as crossed wires and it is mounted on the sleeve at the end thereof. 6 is a headed screw of which the head is attached to the bridge and the point is aligned with the axis of the nozzle and is adapted to project into the bore of the nozzle. The length of the sleeve is such that when it binds on the exterior surface Jf the nozzle the screw projects into the bore of the nozzle with annular space between the end of the nozzle and the bridge. As shown in the drawing the end of the sleeve which carries the bridge 5 and screw E consists of forwardly projecting arms 4a.

While fire hose nozzles are usually of standard dimensions, the sleeve 4 may be made adjustable so as to fit it to nozzles of different dimensions and this can be done by splitting the sleeve in the direction of its axis and providing the edge of the split with bendable tongues 1.

In use the sleeve 4 is passed over the discharge end of the nozzle and when it is moved away from that end as far as it will go, by reason of its binding on the nozzle, the arrangement is adapted to produce, when the water is turned on, an exceedingly fine spray not only at the interior but also at the edges thereof. The sleeve may be readily retained in the described position against the force of the water by holding the sleeve with the hand and if the sleeve be moved in the direction of the end of the nozzle the spray remains very fine at the center portion of it but it is coarser toward the edges. When the screw 6 is positioned at some little distance from the end of the nozzle the water pressure may tend to further move the attachment but such movement may be restrained by a chain 8 having one of its ends attached to the sleeve and having at its other end a ring 9 which is passed over the shank 3 of the nozzle and engages the bead 2. The chain is also useful when present as a means for preventing accidental. detachment and loss of the fitting.

It may be remarked that no alteration what ever in the nozzle is required to adapt it for cooperation with the sleeve and its attached parts.

In the construction shown in Fig. 2 the arms 4a when the sleeve 4 is drawn toward the left permit the attachment to be turned downward in respect to the nozzle I. When this is done the bridge 5 and screw 6 are out of line with the nozzles which may discharge in a stream as it would do in the absence of the attachment.

It will be obvious to those skilled in the art that modifications may be made in details of construction and arrangement and in matters of mere form without departing from the spirit of the invention.

I claim:

1. A spraying attachment for conventional re hose nozzles which is readily applicable thereto and removable therefrom and which requires no alteration therein to permit complete functioning of the attachment; the attachment consisting of a tapering sleeve adapted to be slidably mounted on the taperV surface of the nozzle, and free for endwise movement thereon and over the discharge end thereof but held at rest toward the other end of the nozzle by frictionally binding thereon, a headed screw adapted to axially enter the bore of the discharge end of the nozzle and provide a fine spray and to be withdrawn therefrom to provide a jet, arms projecting from the sleeve toward the end of the nozzle, and a bridge of wire attached to the ends of the arms and to the head of the screw, the arms being of such length that when the sleeve binds on the nozzle the screw projects into the discharge end of the nozzle.

2. A spraying attachment for conventional fire hose nozzles which is readily applicable thereto and removable therefrom and which requires no alteration therein to permit complete functioning of the attachment; the attachment consisting of a tapering sleeve adapted to be slidably mounted on the taper surface of the nozzle, and free for endwise movement thereon and over the discharge end thereof but held at rest toward the other end of the nozzle by binding thereon, a headed screw adapted to axially enter the bore of the discharge end of the nozzle and provide a fine spray and to be withdrawn therefrom to provide a jet, an arm projecting from the sleeve toward the end of the nozzle, and a bridge of wire attached to the end of the arm and to the head of the screw, the arm being of such length that when the sleeve binds on the nozzle the screw projects into the discharge end ofY the nozzle.

VFRANK C. STIEFEL. 

